I got a really strange bruise this weekend on the tandem. DH and I did 90km with a very fast 6km sprint halfway (averging 54km/hr during the sprint

)
Anyway I came home and noticed on the outer side of my thigh a whole heap of little pin prink red marks grouped together in a large patch.
It seems from googling this I have somehow over-extended my muscles during this sprint and causing mini bruising/ bursting of capillaries on the skin's surface- strange!
.